Electricity, switches, transistors Assn. 7

What are the parts of an atom?

• Photons, protons, and nucleus

• Protons, neutrons, and electrons

• Positive charges, negative charge, and neutral charges

• Isotopes, neurons and electricity

These atomic particles can jump from atom to atom creating electrical current.

• Electrons

• Neutrons

• Protons

Conductors...

• ...stop the flow of electricity.

• ...allow the flow of electricity.

Insulators...

• stop the flow of electricity.

• allow the flow of electricity.

Computers use ____________ to represent information.

• input

• output

• switches

• inulators

Computers need these switches so they can work quickly.

• Mechanical

• Non-mechanical

• Servo

A semiconductor is a naturally poor conductor that can be altered into a conductor.

• True

• False

The best material for semiconductors is/are...

• metals.

• plastics.

• glass.

• silicon.

When electricity flows through a transistor in a computer it is...

• on.

• off.

• fluid.

• resistant.

What number represents on when a transistor (switch) is on?

• 0

• 1

• 2

• 4